TCA9554_15 Datasheet, PDF (9/38 Pages) Texas Instruments – TCA9554 Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers

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TCA9554
SCPS233D – MARCH 2012 – REVISED AUGUST 2015
Typical Characteristics (continued)
T_A = 25°C (unless otherwise noted)
70
6
1.8 V
60
2.5 V
3.3 V
5
5V
50
4
40
3
30
2
20
10
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
(V_CC - V_OH) - Output High Voltage (V)
T_A = 25°C
0.8
D007
1
I_OH = -8 mA
I_OH = -10 mA
0
0
1
2
3
4
5
6
V_CC - Supply Voltage (V)
D008
T_A = 25°C
Figure 7. Source Current (I_OH) vs. Output High Voltage (V_OH)
for P-Ports at Four Supply Voltages
Figure 8. Output High Voltage (V_OH) vs. Supply Voltage
(V_CC) for P-Ports
600
550
500
450
400
350
300
250
200
150
100
50
0
0
1
V_CC = 5 V
2
3
4
5
6
Number of I/Os Held Low (#)
25GC
85GC
-40GC
7
8
D001
Figure 9. Supply Current (I_CC) vs. Number of I/Os Held Low (#)
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